Oil atomizer



June 19, 1923. y P. H. GENTZEL OIL ATOMIZER Filed ont. 25, 1919 V I K L459Al48 Perry Hentel Patented June 19, L1923.

UNITED STATES PERRY H. GENTZEL, OF NEWTON, MASSACHUSETTS.

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Application led October 25, 1919. serial No. 333,298.

To alljwhom it may cof/wem.'

Be 1t known that I, PERRY HoMnn GENT- znL a citizen of the United States, residing at ewton, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Oil Atomizers, of which the following is a specication.

'.lhe object of my said invention is to previde an atomizer for thoroughly atomizing hydro-carbon fuel used for the generation of steam under a boiler, particularly the boiler of an engine employed as a motor for cars, whereby such an atomizer is provided which will be ecient in service and will be capable of adjustment to suit all conditions of fuel and atmosphere, all as will hereinafter be more fully described and claimed.

Referring to the accompanying drawings, which are made a art hereof and on which similar reference characters indicate similar Pam Figure 1 is a section through a burner and the adjacent art of a furnace, illustrating m improvedp construction of device, and

igure 2 a side elevation of the same.

ln said drawings the portions marked A represent the venturi brick at the mouth of the furnace and B a rod on which the burner proper is adjustably mounted.

it will be understood that the portion of the furnace illustrated may be of any approved or desired type, the mouth being referably of the venturi form, as indicated.

e rod B is supported by a spider-like bracket 10 secured by bolts 25 to the front of the furnace and carries a base or support 11 thereon. A bell-mouth tube 12 is supported on a rod 13 adjustably mounted in said base 11 by means of a set screw la. Another bell-mouth tube 15 of smaller diameter is mounted Within said tube 12 and a third bell-mouth tube 16 of'still smaller diameter is mounted within tube 15. Said several tubes 12, 15 and 16 are secured together by brace bars 26 attached thereto at intervals around their peripheries, preferably by spot welding orother appropriate means. The burner atomizer 17 is mounted within the bell-shaped mouth of the tube 16, and has a central discharge passage '21 which is of comparatively large diameter near its discharge end, as from pointel the outer end forming a chamber 22, and communicates 'with a steam jet supply pipe .18 by a minute passage which increasesv in diameter toward said point z. An oil supply pipe 19 com-l municates with a discharge nozzle 20 which projects on an angle of about 30 degrees to within the passage Within the burner near its d1s charge end, with its upper end cut on a horizontal plane and substantially on a line with the center line of said orifice. The burner 17 is supported on the base 11 as shown.

By reason of having the bell-mouthed tubes. adjustable in respect to the end of the atomizer burner, the operator is enabled to secure that adjustment which will best suit any atmospheric condition. The formation of the passage in the burner communicating with the steam inlet permits the steam, which comes through the small passage under great pressure, to ex and and increase the velocity of the steam, t is velocity being secured by the divergent form of the nozzle shown. he steam after passing through the throat of the nozzle and entering the divergent nozzles is calculated to attain a maximum Velocity where it passes over the tube 20 at an angle of 30 and serves the double purpose of atomizing the fuel, which passes through said tube, and of drawing the fuel from said tube and increasing thcvelocity thereof. After the fuel has thus been mixed with the steam it is thoroughly atomized and the ejector draws the mixture through the bell-mouth of the first air supply tube and then so on through the successive tubes, drawing in an additional supply of air which mixes with the mixture coming through the preceding tube until the mixture from the last tube passes into the venturi brick or fire box of the furnace, drawing with it the nal supply of air and forming the combustible mixture. rlhe temperature of the steam coming into the throat of the atomizer nozzle would be approximately 700 Fahrenheit and would enter at a velocity of 1860 feet per second. rlhe velocity increases rom the time it passes the throat of the nozzle until it reaches a point Where the fuel is admitted and at this proximately L115() feet per secon B this construction a most perfect atomization is obtained and a mixture that can be readily controlled to securethe most desirable results.

Having thus fully described my said invention what l claim as new and desire to secure by Letters Patent, is:

1. A hydro-carbon uel atomizer consistpoint is aplll@ Leens-aa ing of an atomizer burner having a throat of increasin diameter and connected. with a steam supp y pipe, a fuel supply tube having its discharge end positioned centrally within the opening in said atomlzer burner and communicatmg therewith U approxlmatel at the point where the said lncrcasing iameter produces the maximum velocity of steam, and a series of bell-mouth tubes positioned around the outer end of said atomizer burner and the outer ends of each other of succeeding increasin diameters and mounted to be adjustab e, substantial] as set forth.

2. A iquid fuelatomizer comprising a burner formed with a nozzle having a passage connected with a steam supply, the diameter of which passage lncreases from the entrance for a distance toward the exit with' a comparatively large chamber near its discharge end, a fuel supply nozzle positioned within said chamber, a series. of bell-mouth 'tubes of successive increasing diameters, and mounted around the outer end of said burner and the outer ends of each other and arranged to discharge within the mouth of the furnace, said tubes being djustably mounted, substantially as set fort 3. A hydro-carbon fuel atomizer consisting of an atomizer burner having a throat of increasing diameter connected with a ste supply pipe, a fuelsupply tube having its dischar e end positioned centrally within the openlng in said atomizer burner and near its dischar e end, a series of bellmouth tubes .secure together and adjustably mounted upon and relative to the burner.

d. A hydro-carbon fuel atomizer consisting of a burner slidably mounted upon a support fixed to the furnace at the venturi entrance, said burner having a throat of increlasing diamterl connelacted astean su ieauesuppytue avm 1s disegni-pend positioned centrally wigthin the opening in said burner and at the point where the steam reaches its maximum velocity, said burner provided with a slot, a series of bell-mouth tubes permanently secured together and provided with an extension slidably supported within said slot, said bell-mouth tubes positioned around the outer end of said atomizer burner and having the outer ends of each other of succeeding increasing diameters.

5. A hydro-carbon fuel atomizer comprising an atomizer burner havinga throat for supplying (steam, said throat expanding intol a chamber, a fuel supply nozz e extending into thechamber, a serles of concentric bellmouth tubes joined together and means for adjusting the tubes axially with respect to the burner.

6. A hydro-carbon fuel atomizer comprisincreasing progressively and merging into a chamber, a plurality of concentric bellmouth tubes proportioned to admit successively increasing volumes of air to the atomized mixture as it advances through the said tubes, said bell-mouth tubes being permanently secured together, and means for adjusting the tubes axially with respect Jto the burner. y

8. A hydro-carbon fuel atomizer comprising an atomizer burner having an expanding throat for supplying steam, a fuel supply nozzle having its point of discharge near the end of the expanded portion, a series of concentric bell-mouth tubes adjustably mounted upon the burner and proportioned to admit successivel increasing volumes of aii` to the mixture o fuel and steam as it advances through the bell-mouth tubes.

9. A hydro-carbon fuel atomizer comprising an atomizer burner having an expanding throat for supplying steam, a fuel supply nozzle having its oint of discharge near the end of the expandbdportion, a series of concentric bell-mouth tubes adjustably mounted upon the burner and proportioned to admit successivel increasing volumes of air to the mixture o fuel and steam as it advances through the bell-mouth tubes a spiderlike bracket rigidly secured to the furnace and depending downwardly and outwardly therefrom, said bracket being provided With a rod for supportin the burner and permittin adjustment of t e combined burner and tu es-as a unit with respect to the furnace.

10. A hydro-carbon fuel atomizer comprising in combination with a furnace hav-- mg an opening, a spiderlike bracket rigidly secured to the furnace and extending outwardly from the furnace and toward the middle of the furnace opening, a horizontal rod projecting from the lower end of the bracket and extending inwardly toward the furnace opening, an atomizer burner slidabl mounted on the bar, said atomizer burner aving an expanding throat for supplying steam, a fuel supply nozzle and a series of concentrically arranged bell-mouth tubes mounted on the burner.

11. A hydro-carbon fuel atomizer comprising in combination with a furnace havmg'an opening, a spiderlike bracket rigidly secured to the furnace and extending eutwardly from the furnace and toward the middle of the furnace opening, a horizontal rod projecting from the lower end of the bracket and extending inwardly toward the furnace opening, an atomizer burner slidabl mounted on the bar, said latomizer burn'- er liaving an expanding throat for supplying steam, a fuel supply nozzle and a series of concentrically arranged bell-mouth tubes mounted on the burner, said tubes being permanently secured to each other and means for` adjusting the tubes as a unit with respect to the burner.

.12. A hydro-carbon fuel atomizer comprising in combination with a furnace having an opening, a spiderlike bracket rigidly secured to the furnace and extending outwardly from the furnace and toward the middle of the furnace opening, a horizontal rod projecting from the lower end of the bracket and extending inwardly toward the furnace opening, an atomizer burner slidably mounted on the bar, said atomizer burner having an expanding throat for supplying steam, a fuel supply nozzle and a series of concentrically arranged bell-mouth tubes mounted on the burner, said tubes being permanently secured to each other, means for adjusting the tubes as a um't with respect to the burner, and means for adjusting the combined burner and tubes as a unit with respect to the furnace opening.

13. A liquid fuel atomizer comprising a chamber, a steam assage of progressively increased diameter eading into the chamber and a fuel supply nozzle extending into said chamber adjacent the point where the said passage opens into the chamber, substantially as set forth. l

In Witness whereof, I have hereunto set my hand and seal at Boston, Massachusetts, this 2nd day of September, A. D. nineteen hundred and nineteen.

PERRY H. GENTZEL. [L. 8.]

Witness:

E. W. BRADFORD. 

